The little scientist is examining stonecrop.
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Umbriel: These grow on almost bare rock. Only a little crack is needed for them to gain hold.
There were more interesting things to examine on the shore.
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Umbriel: Dandelions also seem to grow everywhere.
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Umbriel: I can see rocks on the bottom of the lake, but I can't see any fishes.
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Umbriel: The lake seems to go very far. If I write a letter and put it in a bottle and throw it into the lake, will it reach my friends in America?
Outsider: No, the bottle would be caught by the hydroelectric power plant dam.
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Umbriel: I guess I'll have to just send email then...
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Umbriel: Look, there are even ferns growing in the cracks of the rock because here the rock drops steeply and this is a shadowy place.
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Umbriel: It is safer to examine these than the prickly pear cactus. These don't have pricks or thorns.